package edu.fpa.day0730;

public class StringBuilder {
    public static void main(String [] args){
        String str="aaasss";
        StringBuffer sb=new StringBuffer("ssdsdsdsds");


        System.out.println(Integer.toHexString(sb.hashCode()));
        System.out.println(sb);
        sb.setCharAt(2,'S');
        System.out.println(sb);



    }
}
